A U.S. federal judge on Thursday halted the Trump administration’s designation of Anthropic as a supply-chain risk, issuing a ruling that the government trampled free-speech protections when it classified the artificial-intelligence company as a security threat and barred government use of its models.?

Judge Rita F. Lin of the Northern District of California in her decision ordered the Trump administration to desist from applying the president’s directive that federal agencies stop using Anthropic’s technology, and from implementing its designation of the company as a risk to the national security supply chain. She also required the government to provide a report by April 6 detailing how it has complied with her ruling.